#VU1961 Spoofing attack in Apache HTTP Server - CVE-2016-8743
Published: December 21, 2016 / Updated: June 8, 2017
Vulnerability identifier: #VU1961
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2016-8743
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Apache HTTP Server
Apache HTTP Server
Software vendor:
Apache Foundation
Apache Foundation
Description
The vulnerability allows a remote attacker to perform spoofing attack.
The vulnerability exists due to insufficient sanitization of HTTP request, which contain whitespace characters. A remote attacker can send a specially crafted HTTP request, containing CR, FF, VTAB characters followed by CRLF sequence and inject arbitrary data in server response.
Successful exploitation of this vulnerability may result in content spoofing, web cache poisoning and XSS attacks.
Remediation
Install the latest version Apache HTTP Server 2.4.25 or 2.2.32.